tools/testing/selftests/gpio/gpio-mockup.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 #exit status
   5 #1: run as non-root user
   6 #2: sysfs/debugfs not mount
   7 #3: insert module fail when gpio-mockup is a module.
   8 #4: other reason.
   9
  10 SYSFS=
  11 GPIO_SYSFS=
  12 GPIO_DRV_SYSFS=
  13 DEBUGFS=
  14 GPIO_DEBUGFS=
  15 dev_type=
  16 module=
  17
  18 usage()
  19 {
  20         echo "Usage:"
  21         echo "$0 [-f] [-m name] [-t type]"
  22         echo "-f:  full test. It maybe conflict with existence gpio device."
  23         echo "-m:  module name, default name is gpio-mockup. It could also test"
  24         echo "     other gpio device."
  25         echo "-t:  interface type: chardev(char device) and sysfs(being"
  26         echo "     deprecated). The first one is default"
  27         echo ""
  28         echo "$0 -h"
  29         echo "This usage"
  30 }
  31
  32 prerequisite()
  33 {
  34         msg="skip all tests:"
  35         if [ $UID != 0 ]; then
  36                 echo $msg must be run as root >&2
  37                 exit 1
  38         fi
  39         SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
  40         if [ ! -d "$SYSFS" ]; then
  41                 echo $msg sysfs is not mounted >&2
  42                 exit 2
  43         fi
  44         GPIO_SYSFS=`echo $SYSFS/class/gpio`
  45         GPIO_DRV_SYSFS=`echo $SYSFS/devices/platform/$module/gpio`
  46         DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
  47         if [ ! -d "$DEBUGFS" ]; then
  48                 echo $msg debugfs is not mounted >&2
  49                 exit 2
  50         fi
  51         GPIO_DEBUGFS=`echo $DEBUGFS/gpio`
  52         source gpio-mockup-sysfs.sh
  53 }
  54
  55 try_insert_module()
  56 {
  57         if [ -d "$GPIO_DRV_SYSFS" ]; then
  58                 echo "$GPIO_DRV_SYSFS exist. Skip insert module"
  59         else
  60                 modprobe -q $module $1
  61                 if [ X$? != X0 ]; then
  62                         echo $msg insmod $module failed >&2
  63                         exit 3
  64                 fi
  65         fi
  66 }
  67
  68 remove_module()
  69 {
  70         modprobe -r -q $module
  71 }
  72
  73 die()
  74 {
  75         remove_module
  76         exit 4
  77 }
  78
  79 test_chips()
  80 {
  81         if [ X$dev_type = Xsysfs ]; then
  82                 echo "WARNING: sysfs ABI of gpio is going to deprecated."
  83                 test_chips_sysfs $*
  84         else
  85                 $BASE/gpio-mockup-chardev $*
  86         fi
  87 }
  88
  89 gpio_test()
  90 {
  91         param=$1
  92         valid=$2
  93
  94         if [ X"$param" = X ]; then
  95                 die
  96         fi
  97         try_insert_module "gpio_mockup_ranges=$param"
  98         echo -n "GPIO $module test with ranges: <"
  99         echo "$param>: "
 100         printf "%-10s %s\n" $param
 101         test_chips $module $valid
 102         remove_module
 103 }
 104
 105 BASE=`dirname $0`
 106
 107 dev_type=
 108 TEMP=`getopt -o fhm:t: -n '$0' -- "$@"`
 109
 110 if [ "$?" != "0" ]; then
 111         echo "Parameter process failed, Terminating..." >&2
 112         exit 1
 113 fi
 114
 115 # Note the quotes around `$TEMP': they are essential!
 116 eval set -- "$TEMP"
 117
 118 while true; do
 119         case $1 in
 120         -f)
 121                 full_test=true
 122                 shift
 123                 ;;
 124         -h)
 125                 usage
 126                 exit
 127                 ;;
 128         -m)
 129                 module=$2
 130                 shift 2
 131                 ;;
 132         -t)
 133                 dev_type=$2
 134                 shift 2
 135                 ;;
 136         --)
 137                 shift
 138                 break
 139                 ;;
 140         *)
 141                 echo "Internal error!"
 142                 exit 1
 143                 ;;
 144         esac
 145 done
 146
 147 if [ X"$module" = X ]; then
 148         module="gpio-mockup"
 149 fi
 150
 151 if [ X$dev_type != Xsysfs ]; then
 152         dev_type="chardev"
 153 fi
 154
 155 prerequisite
 156
 157 echo "1.  Test dynamic allocation of gpio successful means insert gpiochip and"
 158 echo "    manipulate gpio pin successful"
 159 gpio_test "-1,32" true
 160 gpio_test "-1,32,-1,32" true
 161 gpio_test "-1,32,-1,32,-1,32" true
 162 if [ X$full_test = Xtrue ]; then
 163         gpio_test "-1,32,32,64" true
 164         gpio_test "-1,32,40,64,-1,5" true
 165         gpio_test "-1,32,32,64,-1,32" true
 166         gpio_test "0,32,32,64,-1,32,-1,32" true
 167         gpio_test "-1,32,-1,32,0,32,32,64" true
 168         echo "2.  Do basic test: successful means insert gpiochip and"
 169         echo "    manipulate gpio pin successful"
 170         gpio_test "0,32" true
 171         gpio_test "0,32,32,64" true
 172         gpio_test "0,32,40,64,64,96" true
 173 fi
 174 echo "3.  Error test: successful means insert gpiochip failed"
 175 echo "3.1 Test number of gpio overflow"
 176 #Currently: The max number of gpio(1024) is defined in arm architecture.
 177 gpio_test "-1,32,-1,1024" false
 178 if [ X$full_test = Xtrue ]; then
 179         echo "3.2 Test zero line of gpio"
 180         gpio_test "0,0" false
 181         echo "3.3 Test range overlap"
 182         echo "3.3.1 Test corner case"
 183         gpio_test "0,32,0,1" false
 184         gpio_test "0,32,32,64,32,40" false
 185         gpio_test "0,32,35,64,35,45" false
 186         gpio_test "0,32,31,32" false
 187         gpio_test "0,32,32,64,36,37" false
 188         gpio_test "0,32,35,64,34,36" false
 189         echo "3.3.2 Test inserting invalid second gpiochip"
 190         gpio_test "0,32,30,35" false
 191         gpio_test "0,32,1,5" false
 192         gpio_test "10,32,9,14" false
 193         gpio_test "10,32,30,35" false
 194         echo "3.3.3 Test others"
 195         gpio_test "0,32,40,56,39,45" false
 196         gpio_test "0,32,40,56,30,33" false
 197         gpio_test "0,32,40,56,30,41" false
 198         gpio_test "0,32,40,56,20,21" false
 199 fi
 200
 201 echo GPIO test PASS
 202